ENGINE PERFORMANCE – Subaru Impreza 2.5 GT 2009 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

2.5L

2.5L, Engine Performance Wiring Diagram (1 of 4) for Subaru Impreza 2.5 GT 2009

List of elements for 2.5L, Engine Performance Wiring Diagram (1 of 4) for Subaru Impreza 2.5 GT 2009:

• (on right fuse & relay box) electronic throttle control relay
• (on right fuse & relay box) ig relay
• (on right fuse & relay box) main relay
• (top center of engine) ge-1
• B134
• B137
• B186
• Engine control module (right side of dash)
• Fuse 15a
• Ge-1 (top center of engine)
• Hot at all times
• Left oil switching solenoid valve (left rear of engine)
• Left variable valve lift diagnosis oil pressure switch (left front of engine)
• Main fuse box (m/b) (left rear of engine compt)
• Nca
• Oil temperature sensor (top right side of engine)
• Oxygen (a/f) sensor relay
• Pcv diagnosis connector
• Pnk
• Power steering oil pressure switch (at right front of engine)
• Red
• Right oil switching solenoid valve (right rear of engine)
• Right variable valve lift diagnosis oil pressure switch (right front of engine)

2.5L, Engine Performance Wiring Diagram (2 of 4) for Subaru Impreza 2.5 GT 2009

List of elements for 2.5L, Engine Performance Wiring Diagram (2 of 4) for Subaru Impreza 2.5 GT 2009:

• (top of fuel tank) fuel pump
• B52
• Combination meter
• Drive circuit
• Ect nd
• Ect warning light ind
• Engine coolant temp gauge
• Front oxygen (a/f) sensor (front of front catalytic converter)
• Fuel pump
• Fuel pump relay (on right fuse & relay box)
• Fuel temp sensor
• Fuse & relay box (f/b)
• Fuse 15a
• Gb-11
• Gb-7 (near right "c" pillar)
• Ge-1 (top center of engine)
• Hot at all times
• Hot in on or start
• I/f
• Ignition coil & igniter (top right side of engine)
• J/c i97 (left side of dash)
• Micro computer
• Mil ind
• Nca
• Oil pressure
• Oil pressure switch (front of engine)
• Pnk
• Power circuit
• Power distribution system
• Purge control solenoid valve (on intake manifold)
• R168
• Rear oxygen sensor (rear of transmission)
• Red
• Right fuse & relay box (f/b) (right side of dash) b220
• Speedo- meter
• Tacho- meter
• Warning light ind

2.5L, Engine Performance Wiring Diagram (3 of 4) for Subaru Impreza 2.5 GT 2009

List of elements for 2.5L, Engine Performance Wiring Diagram (3 of 4) for Subaru Impreza 2.5 GT 2009:

• (left side of dash) accelerator pedal position sensor
• (left side of dash) data link connector
• (right side of dash) j/c b122
• (right side of dash) j/c b83
• (right side of engine compt) mass air flow & intake air temperature sensor
• (top of fuel tank) fuel tank pressure sensor
• B440
• B442
• B75
• B76
• Drain valve (under left rear of vehicle)
• Egr valve (rear of engine)
• Electronic throttle control (at throttle body)
• Engine coolant temperature sensor (top center of engine)
• Manifold absolute pressure sensor (top rear of engine)
• Multi j/c b440 & b442 (left side of dash)
• Nca
• Pnk
• Pressure control solenoid valve (under center rear of vehicle)
• Red
• Test mode connector

2.5L, Engine Performance Wiring Diagram (4 of 4) for Subaru Impreza 2.5 GT 2009

List of elements for 2.5L, Engine Performance Wiring Diagram (4 of 4) for Subaru Impreza 2.5 GT 2009:

• (at left front of engine) fuel injector 2
• (at left rear of engine) fuel injector 4
• (at right front of engine) fuel injector 1
• (at right rear of engine) fuel injector 3
• (manual a/c)
• (top center of engine) ge-1
• Air conditioning system
• Anti-theft system
• B135
• B136
• B145
• B186
• Camshaft position sensor (left front of engine)
• Computer data lines system
• Cooling fans system
• Crankshaft position sensor (lower front of engine)
• Cruise control system
• Engine control module (right side of dash)
• Fuse 7.5a
• Ge-2 (top center of engine)
• Hot at all times
• J/c b138 (right side of dash)
• Knock sensor (at center rear of engine)
• Main fuse box (m/b) (left rear of engine compt)
• Nca
• Pnk
• Red
• Sbf 5 fuse 30a
• Sbf 7 fuse 30a
• Starting/ charging system
• Starting/charging system

2.5L TURBO

2.5L Turbo, Engine Performance Wiring Diagram (1 of 5) for Subaru Impreza 2.5 GT 2009

List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (1 of 5) for Subaru Impreza 2.5 GT 2009:

• (left side of dash) data link connector
• (left side of dash) multi j/c b440 & b442
• (right side of dash) j/c b122
• (turbo: top left of engine) (ho turbo: top right side of engine) ge
• Accelerator pedal position sensor (left side of dash)
• Air conditioning system
• Anti-theft system
• B135
• B136
• B220
• B440
• B442
• B76
• Computer data lines system
• Cooling fans system
• Cruise control system
• Delivery test mode connector b75
• Electronic throttle control relay (on right fuse & relay box)
• Engine control module (right side of dash)
• Fuel tank pressure sensor (top of fuel tank)
• Fuse 15a
• J/c b83 (right side of dash)
• Mass air flow & intake air temperature sensor (right side of engine compt)
• Nca
• Pnk
• Red
• Right fuse & relay box (f/b) (right side of dash)
• Starting/ charging system
• Starting/charging system
• Wrx sti

2.5L Turbo, Engine Performance Wiring Diagram (2 of 5) for Subaru Impreza 2.5 GT 2009

List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (2 of 5) for Subaru Impreza 2.5 GT 2009:

• (near right "c" pillar)
• (on right fuse & relay box) main relay
• (wrx sti) shift up ind
• B145
• B186
• Combination meter
• Drain valve (under left rear of vehicle)
• Drive circuit
• Engine coolant
• Engine coolant temperature gauge
• Fuel pump (top of fuel tank)
• Fuel pump control module (sedan: right rear of trunk) (wagon: right rear quarterpanel)
• Fuel pump relay (on right fuse & relay box)
• Fuel temp sensor
• Fuse 15a
• Fuse 7.5a
• Fuse sbf-5 30a
• Fuse sbf-7 30a
• Gb-11 (under center console)
• Gb-3 (right end of dash)
• Gb-7
• Hot at all times
• I/f
• J/c i97 (left side of dash)
• Main fuse box (m/b) (left rear of engine compt)
• Malfunction ind light
• Micro computer
• Nca
• Oil pressure
• Oxygen (a/f) sensor relay
• Power circuit
• Pressure control solenoid valve (on intake manifold)
• Red
• Speedo- meter
• Tacho- meter
• Temp ind
• Warning ind

2.5L Turbo, Engine Performance Wiring Diagram (3 of 5) for Subaru Impreza 2.5 GT 2009

List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (3 of 5) for Subaru Impreza 2.5 GT 2009:

• (or red)
• (turbo: top left of engine) (ho turbo: top right side of engine) ge
• 10a
• 60a
• B143
• B144
• B52
• F37
• Front oxygen (a/f) sensor (front of front catalytic converter)
• Fuse & relay box (f/b)
• Fuse 15a
• Hot at all times
• Hot in on or start
• J/c b138 (right side of dash)
• Left & right secondary air combination valve (turbo: left & rear of engine) (ho turbo: rear of engine)
• Main fuse box (m/b) (left rear of engine compt)
• Nca
• Oil pressure switch (front of engine)
• Purge control solenoid valve 2 (on intake manifold)
• R168
• Rear oxygen sensor (rear of transmission)
• Red
• Relay holder (left rear of engine compt)
• Secondary air combination valve relay 1
• Secondary air combination valve relay 2
• Secondary air pump (left front of engine compt)
• Secondary air pump relay
• Wastegate control solenoid (right rear of engine)
• Wrx
• Wrx sti

2.5L Turbo, Engine Performance Wiring Diagram (4 of 5) for Subaru Impreza 2.5 GT 2009

List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (4 of 5) for Subaru Impreza 2.5 GT 2009:

• (at left front of engine) ignition coil 2
• (at left rear of engine) ignition coil 4
• (at right front of engine) ignition coil 1
• (at right rear of engine) ignition coil 3
• (left front of engine) left intake oil flow control solenoid valve
• (or red)
• (right front of engine)
• (right front of engine) (wrx sti) right exhaust oil flow control solenoid valve
• (right front of engine) right intake oil flow control solenoid valve
• (right rear of engine)
• (right rear of engine) leak diagnosis connector
• Crankshaft position sensor (lower front of
• Engine)
• Except wrx sti
• Ge (ho turbo: top right side of engine) (turbo: top left of engine)
• Knock sensor (rear of engine)
• Left camshaft position sensor (left rear of engine)
• Left exhaust cam position sensor (left front of engine)
• Left exhaust oil flow control solenoid valve (wrx sti) (left front of engine)
• Left intake camshaft position sensor (left rear of engine)
• Manifold absolute pressure sensor (top rear of engine)
• Nca
• Purge control solenoid valve 1 (on intake manifold)
• Red
• Right camshaft position sensor (right rear of engine)
• Right exhaust cam position sensor
• Right intake camshaft position sensor
• Wrx
• Wrx sti

2.5L Turbo, Engine Performance Wiring Diagram (5 of 5) for Subaru Impreza 2.5 GT 2009

List of elements for 2.5L Turbo, Engine Performance Wiring Diagram (5 of 5) for Subaru Impreza 2.5 GT 2009:

• (at left front of engine) fuel injector 2
• (at left rear of engine) fuel injector 4
• (at right front of engine) fuel injector 1
• (at right rear of engine) fuel injector 3
• (ho turbo: top right side of engine) (turbo: top left of engine)
• (ho turbo: top right side of engine) (turbo: top left of engine) ge
• (or red)
• (wrx)
• B134
• B137
• Electronic throttle control (at throttle body)
• Engine control module (right side of dash)
• Engine coolant temperature sensor (top left front of engine)
• Ge (ho turbo: top right side of engine) (turbo: top left of engine)
• Left tumble generator valve assembly (at left rear of engine)
• Nca
• Pnk
• Power steering oil pressure switch (right front of engine)
• Red
• Right secondary air combination valve (wrx) left secondary air combination valve (wrx sti) (wrx sti: left rear of engine) (wrx: right rear of engine)
• Right tumble generator valve assembly (at right rear of engine)
• Wrx sti